What does NaOH do to aldehyde?

Adding base (such as NaOH) to an aldehyde or ketone will generate a little bit of enolate, which can reaction with another carbonyl molecule. This reaction is called the aldol condensation. The product contains a hydroxyl (–OH) group beta to the carbonyl, and so is called a beta-hydroxy carbonyl.

What happens when acetaldehyde reacts with i2 and NaOH?

When acetaldehyde reacts with iodine in dil. NaOH solution then they are oxidised to sodium salts of corresponding carboxylic acids having one carbon atom less than that of carbonyl compound. The methyl group is converted into iodoform.

What happens when acetaldehyde is treated with hydrogen?

Action of HCN on acetaldehyde : When acetaldehyde is treated with hydrogen cyanide, acetaldehyde cyanohydrin is formed.

What happens when excess formaldehyde is treated with acetaldehyde in presence of 50 NaOH?

When formaldehyde is treated with conc. NaOH solution, it forms of methanol and sodium formate.

What would be the product of acetaldehyde were treated with sodium hydroxide instead of acetone?

When acetaldehyde is treated with dil. NaOH it undergoes self condensation as it contains alpha-hydrogen atom in its compound forming β-hydroxyaldehyde (an aldol) namely 3-Hydroxy butanal.

What happens when acetaldehyde is boiled with hydrazine and concentrated KOH?

Assertion : Aldehydes or ketones on heating with hydrazine and KOH or pot, tert butoxide in high boiling solvent such as ethylene glycol give the reduced product. The reaction is known in Wolff Kishner Reduction.

How does acetaldehyde react with hydrazine?

Hint: Acetaldehyde is an aldehyde that is highly reactive and toxic. -When an aldehyde is reacted with dilute aqueous caustic soda it undergoes an aldol reaction. -When it is reacted with hydrazine it undergoes Wolff-Kishner reaction. -When it is reacted with ammoniacal silver nitrate it undergoes Tollens reaction.

What happen when acetaldehyde react with hydrazine?

Aldehydes and ketones can be converted to a hydrazine derivative by reaction with hydrazine. These “hydrazones” can be further converted to the corresponding alkane by reaction with base and heat. Nitrogen gas is produced as part of this reaction.

How does formaldehyde react with NaOH?

When conc. sodium hydroxide (NaOH) reacts with formaldehyde (HCHO), the products formed is/are sodium formate (sodium-formiate, HCOONa , and methanol (CH3OH). | HCHO undergoes Cannizarro’s reaction as follows: 2HCHO + NaOH → HCOONa + CH3OH ).

When a mixture of benzaldehyde and formaldehyde is heated with 50\% NaOH solution the product is a mixture of?

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives the product benzyl alcohol and sodium formate. It is a example of crossed Cannizzaro reaction.

What do you call the reaction between acetaldehyde and concentrated NaOH?

Acetaldehyde reacts with NaOH to form beta hydroxy butyraldehyde. This is an example of aldol condensation reaction and is given by aldehydes or ketones having alpha hydrogen atom.

What happens when acetaldehyde reacts with NaOH?

Acetaldehyde reacts with NaOH to form beta hydroxy butyraldehyde. This is an example of aldol condensation reaction and is given by aldehydes or ketones having alpha hydrogen atom. Answer verified by Toppr Upvote (0)

What is aldol condensation of acetaldehyde?

Acetaldehyde undergo self condensation reaction withNaOH,reaction is called as aldol condensation,initially β-hydroxy aldehyde is obtained which on heating α,β-unsaturated aldehyde is obtained.

How to prepare isopropyl alcohol from acetaldehyde?

Acetaldehyde is treated with methyl magnessium bromide in presence of dry ether to form Mg complex which on acid hydrolysis,isopropyl alcohol is obtained. Step-2:—Oxidation of isopropyl alcohol. Isopropyl alcohol is oxidised by acidified potassium dichromate to form acetone.

What is the reaction between acetophenone and Br2 and NaOH?

Acetophenone is a methyl ketone. The addition of Br 2 and NaOH sets up the conditions for the haloform reaction. This reaction turns a methyl ketone into haloform and an acid (or its conjugate base). In this case, the following reaction would occur: